Albeet d



(No Model.)

A. D. GOODELL. Ratchet Bit-Brace.

No. 228,810. Patented June I5,

NJETERS. PHOTO-UTOGHAPNER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE..

ALBERT D. GOODELL, OF MILLERS FALLS, MASSACHUSETTS, ASSIGNOR TO MILLERSFALLS COMPANY, F SAME PLACE.

RATCHET BIT-BRACE.

SPECIFICATION forming part of Letters Patent No. 228,810, dated June 15,1880.

Application filed March 5, 1880.

T0 all whom it may concern Be it known that I, ALBERT D. GooDELL, ofMillers Falls, in the county ot' Franklin and Commonwealth ofMassachusetts, have invented a new and useful Improvement in RatchetBit-Braces, of which thefollowin g is a full and clear description.

My invention relates to that class of bitbraces to which is attached aratchet and 1o pawl, to enable one to use a boring-tool or other in abrace when, from its being in a conined position or otherwise, it isconvenient to turn the tool in working condition partly around, andturning the handle back without working the tool, the ratchet slidingunder the pawl, the tool comes back to a working position, as before.

All of my invention is represented in the accompanying drawings, ofwhich- Figure 1 is an elevation of the brace, partly in section Fig. 2,a horizontal section on line x x of Fig. 1. Fig. 3 is a detail, showingthe relation of ratchet to pawl.

All the parts ofthe bit-brace which hold the boring-tool, as the jaws,the slotted socket in which they work, and the sleeve-nut which retainsthem, are supported by, secured to, and dependent on a standard, A,which passes through the lower end of the bit-stock in the 3o same planewith the handle and the breastpiece or head, and Aalso through theratchet B,

which controls the action ot the boring, and in which it is secured by apin, a, passing through the ratchet and the standard.

The lower end ot' the bit-stock is slotted at a right angle to the planeof the handle, head, and boring-tool deep enough to receive the ratchetB and pawl C behind it. Back of this slot is drilled'a hole, D, deepenough to re- 40 ceive a small helical spring, E, having on its outerend a stud or face, b, to bear against the pawl and to keep it inbearing against the ratchet. The ratchet B is a section of a cylinder,having through its center a hole, through 4 5 which passes the standardA, holding the jaws and sleeve which gripe the boring-tool, and to whichit is secured by a pin, a, passing through both.

The pawl consists of a small square bar run- (No model.)

ning in the bebre-mentioned slot through the 5o lower end of thebit-stock, and at right angles to the plane of the handle and boring-tool. On each end of this bar, and bearing against the outer side ofthe bit-stock, is a button, Gr, with a milled edge to att'ord a graspwhereby to turn 55 the pawl. Within these, and bearing on each edge ofthe slot, are rounded shoulders H, on the bar, to admit its being turnedand to keep it in position. Around the central part of this bar are fourprojections, one on each side, 6o which form the pawl operating on theratchet by dropping in turn into the square faced notches on the edge ofthe ratchet, holding it when turned in one direction, and yielding whenturned in an opposite. Two of these projections on opposite sides of thebar have a square Hush face, and as they respectively are let into thenotches on the ratchet hold it fast from turning in either direction. 0nthe other two sides of the baroneof the projectionsis bev- 7o eled froma square tace down to the bar toward theright, and the one on theopposite side of the bar toward the left., so that when the ratchet,which is attached to the boring-tool, is turned in one direction thesquare face of the notch in it engages on the square edge of the pawl,and the boring-tool is turned; but it theratchet is turned the other waythe edge of the notch slides up each of the inclined sidesot' theprojection on the bar forming the pawl till the 8o handle of thebit-stock is turned back, as desired, when it is ready, on being againturned forward, to catch the face of the pawl and hold. The projectionson the two opposite sides of the bar being beveled, one to the right andthe other to the left, form the pawl, and as it is turned so as topresent the one or the other face to the ratchet, so it will operate towork the tool either to the right or to the left.

The buttons on each end ofthe bar forming 9o the pawl are marked in theproper places R. and L.,7 to indicate how the pawl is to be set to workthe tool to the right or left. Y

The pawl is kept up against the ratchet by the force ofthe coiled springwith a head let into the bit-stock behind it.

The four corners of the inclined projections forming the pawl are allbeveled oie a little to admit their easy Working over the notchesforming the teeth of the ratchet and on the face of the spring.

The inner faces of the slot receiving the paWl are Worked out to allow asuflcient space for the points forming the pawl to turn.

The operation of this device is as follows: rlhe boring or other toolbeing` secured in the socket, the buttons on the end of the pawl, or oneof them, is turned so that the letter on its face points outwardlytoward the ratchet. If it is the letter R Iche tool will Work from theleft to the right7 and the handle return free. If the letter L ispointed out the tool will cut from right to left. If the button is setWith E, and bit-stock A, as and for the purpose set forth;

A. D. GOODELL. Vitnesses J AMES S. GRINNELL, FRANCIS M. THOMPSON.

